Magnetic tape unit having an automatic reel latch and
means for sensing improper loading of a tape reel

ABSTRACT

A MAGNETIC TAPE UNIT INCLUDES A SOURCE OF POSITIVE AIR PRESSURE FOR USE WITH COMPONENTS SUCH AS AIR BEARINGS AND THE PNEUMATIC MOTOR OF AN AUTOMATIC REEL LATCH.   D R A W I N G

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofllce makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED MARCH 5, 1974 A magnetic tape unit includes a source of positive air pressure for use with components such as air bearings and the pneumatic motor of an automatic reel latch.

March 5, 1974 E. R. MCCULLY ETAL T920,004

MAGNETIC TAPE UNIT HAVING AN AUTOMATIC REEL LATCH AND MEANS FOR SENSING IMPROPER LOADING OF A TAPE REEL Filed Dec. 22, 1972 3 Sheets-Sheet 1 FIG. 1

REEL NOT LOADED 52 PROPERLY THREADING l-55 SUCCESSFUL UNIT CHECK- 55 ABORT THREADING 21 AND LOAOLMO 0F LOAD VACUUM vAOUUM OOLUMMs OOLUMMs EL ER LT PRESSURE PUMP U L \AIR BEARING 16 PLENUM I m LOAD 44 BUTTON vAOUUM PUMP E. R. MOCULLY EIAL March 5, 1974 T920,004

MAGNETIC TAPE UNIT HAVING AN AUTOMATIC REEL LATCH AND MEANS FOR SENSING IMPROPER LOADING OF A TAPE REEL Filed Dec. 22, 1972 5 Sheets-Sheet 2 March 5, 1974 R. Moc ETAL T920,004

MAGNETIC TAPE U HAVING AN AUTOMATIC REEL LATCH AND MEANS FOR SENSING IMPROPER LOADING OF A TAPE REEL Filed Dec 22, 1972 3 Sheets-Sheet l5 

